Toggle-joint self-filling pen



J. G. Hill.

roams 101M SELF FILLING PEN.

APPLICATION FILED JAN. 5, I918.

Patented Jan. 18, 1921.

UNITED STATES PATENT OFFICE.

JOHN C. WAHL, OF GHIOAG-O, ILLINOIS, ASSIGNOB TO THE WAHL COMPANY, OF WII ILMINGTON, DELAWARE, CORPORATION OF DELAWARE.

TOGGLE-JOIINT SELF-FILLING PEN.

Speciflcation'of Letters Patent.

Patented J an. 18, 1921.

To all whom it may concefit:

Be it known that I J 01in C. WAHL, a citizen of the United tates residing at Chica in the county of (look and State of 11 inois, have invented certain new and useful Im rovements in Toggle-Joint Self- Filling ens,'of which the following is a specification.

M invention is a self filling fountain en in which the ink is contained in a defiata le sack, and a lever is provided for deflating the sack for the purpose of refilling the pen with ink.

The object of my invention is to im rove certain structural details of pens 0 this type and to provide a structure which shall be susceptible of cheap and accurate manufacture and which maybe readily assembled in the position in which it is to be used.

My invention will be best understood by reference to the 'following figures, of which Figure 1 is a longitudinal section of the per Fig. 2' is a longitudinal section with the Y lever in its operative'position;

Fig. 3 is a section along the line 3-3 of lig. 4 is a disassembled view of some detai s; Fig. 5 is a detail view, and Fig. 6 is a view of the blank from which the pen lever is made.

' Referrin to the figures, 10 is an outside casin pre erably made of hard rubber, whic serves as a support for a pin 11, in which is mounted the pen nib 12, an which .is provided at its rear end with a nipple 13,

on which is placed a rubber sack 14, servin as a container for the ink. The ml; 12 is provided with the customary feeding nib 15, which is of course'provided with suitable channels for the suppl ingof ink to the rub 12; Since the particu ar means of keeping the pen 12 supplied with ink do not form a art of my present invention, I will omit the escription. Ink feeds are well known in the art and any suitable construction may be used in connection with my herein described invention.

In ens of the type herein described, it is necessary to provide means for deflating the ink sack when it is desired to refill the same, the custpmaryprocedure being to de .-lever 27 is also flate the sack, then inserting the pen nib 12 into a supply of ink and allowin the sack to expan t us refilling itself with ink by suction. For the purpose of readil deflating the ink sack 14, I have provided the presser bar 16, which 'extends practically the entire length of said sack and have su ported said presser bar by a fiat link 1%, which is ivoted on a bar 18 in the presser bar and is also pivoted in a slot 19 in the end o'f a spring 20. The s ring 20 is the rear end 0 a support 21, w ich is made of spring steel and serves as a support for the lever and presser bar action, as will hereinafter he described. The support 21 has a shell 22, which is formed into a circular shape, ap roximately the diameter of the interior 0 the casing 10, and said shell 22 is provided with a small pro'ection 23, which registers with a hole 24 in t e interior of the casing 10, thus serving to hold the support 21 firmly in its proper position. The shell 22 is normally-somewhat lar er than the interior of the casing 10, but since the shell 22 is provided with a slot 25, the circular section of the support ma be sprung into its place in the interior of t e casing.

Opposite the projection 23 is a pivot bar 26, w ich is formed in the shell 22, as shown in Fi 4. The pivot bar 26 serves as a support or the lever 27, by means ofwhich the presser bar 16 is operated.

The lever 27 is formed from a piece of flat stock of approximately the outline as shown in Fig. 6 and when formed into sha e pro'vides a pivot hole'28, which enga as t e pivot bar 26 and an operatin 'shoul er 29, which engages the surface 35' of a lug 31, which is riveted in the rovi ed with a pair of ears 32 and 33, w ich register with slots 34 and 35 in the presserbar 16. Whenthe lever is inthe position shown in Fig. 2, contact with the presser bar 16 is made by a air of In .36 and 37, which are also ormed on t e lever 27. The pivot holes28 are rovid'ed with slots 38, for the, urpose of a lowing disengagement of the ever 27 from the pivot bar 26.

It is to be noted that when the lever 27 is in its normal position, as shown in Fig. 1,

that the tension of the spring 20 is trans- -mitted through the link 17 to the presser bar 16, and by means of the lug 31 riveted,

therein to the surface 29 of the lever 27. Since when the lever is in its closed position the surface 29 is above the pivot bar 26, the tension of the sprin 20 W111 thus serve to hold the lever 27 firm y in its closed osition, the action being a species of togg e joint. The lever 27 is provided on its under side with shoulders 39, which, when the lever 27 is in its open position (Fig. 2) contact with the interior of the shell 22 and thus determine the 0 en position of the lever 27. In assem lin my improved pen, the link 17 is first attac ed to the bar 18, then to the end of the spring 20. These three parts are then pushed into the interior of the casing 10- and when the projection 23 reaches the hole 24 it will snap therein, thereby holding the shell and its associated parts firmly in the interior of the casing 10. The casing 10 is provided with a slot 40, and the pivot bar 26 -is so situated with reference to the rojection 23 that when the projection 23 is Pocated by the hole 24, the pivot hole 26 will lie across the slot 40. 'The lever 27 is then inserted by placing the pivot hole 28 over the pivot bar 26, the slot 38 permitting such action. After this has been done, the plug 11 which serves as a support for the nib 12 and the sack 14 is then inserted in the casing 10 and the pen is ready for use. i

It will be observed that when the lever 27 is in its closed position, as shown in Fig. 1, the under part 41 of the lever 27 will he in the slots 34 and 35 of the presser bar 16, and also when the lever is in its open position, as shown in Fig. 2, that said slots will be engaged by the ears 32 and 33. 'The presser bar is thus at all times maintained in its pro 1' position.

It Wlll gobserved that the operating parts of my herein described pen are all made from pieces which can be made by punchpress operations, and as a result of this cheapness and accuracy areobtained.

My herein described construction has the great advanta e that all of them crating parts, that is, t e lever 27, the link 1 and the presser bar 16 may be assembled on the shell 22 and adjusted to their correct position prior to inserting these parts in the casmg 10. I also wish to point out that the only connection of these parts with the casing 10 is throu h the medium of the locating lug 23, whic locates the parts b means of the hole 24. It is therefore possi Is to maintain the dimensions of these operatin parts with great exactness, something whic would not be possible if certain arts, for instance, the pivot bar 26, were w olly,or in partsupported b the rubber casing 10. After the pivot an presser bar action has been tested as just described, the lever 27 may be taken oil of the shell 22 and said shell inserted into the casing 10 as hereinbefore described.

Many changes and alterations may be a casing, a deflatable sack therein,

made in the precise structure herein described without departing from the spirit of my invention, since I claim:

I 1. In a fountain pen, the combination of a casing, a de' atable sack inserted in said casing, an operating lever for said sack, a plvot for said operating, lever, and a shell iavlng said pivot 'inte ral therewith adapted to be inserted in said casing and extending longitudinally thereof a distance greater than the diameter of said pivot.

2. In a fountain pen, the combination of a casing, a defiat'able-sack inserted in said casing, an operating lever for said sack, a pivot for said operating lever, said operating lever being removably mounted on said pivot, and a shell having said pivot integral therewith adapted to be inserted in said casing. and extending longitudinally thereof a distance greater than the diameter of said pivot.

3. In a fountain pen, the combination of a casing, a" shell adapted to be inserted in said casing, a pivot integral with said shell, and an o eratlng lever formed of a single piece to ded longitudinally and having slotted pivot holes therein mounted on said pivot.

4. In a fountain pen; the combination of an outside casing; a deflatable sack; a presser bar; a shell adapted to be sprung in said casing having one of its extremities so bent as to form a laterally extending spring; and a link pivotally mounted on said spring, the opposite end of said link being pivotally connected with the pressure bar.

5. In a fountain pen, the combination of an outside casing, a deflatable sack, a presser bar, a shell adapted to be sprung in said casing and having a spring at one end, a link mounted on said sprin a presser bar attached to said link, and a ever for actuating said presser bar pivoted on said shell.

6. In a fountain pen, the combination of an outside casing, a deflatable sack, a presser bar, a shell adapted to be sprung in said casing and having a spring at one end, a link mounted on said spring, a presser bar attached to said link, and a lever for operat- In said presser bar removably pivoted on said shell.

7. In a fountain pen, the combination of a casing, a casing locating means to locate said shell in its proper position relative to said casing, a spring attached to said shell, 9. link attached to said spring, a presser bar for 'the defia'table sack attached to said link, a pivot integral with said shell, and an operating lever for said presser bar mounted on said pivot.

8. In a fountain pen, the combilnation of a presser bar adapted to deflate said sack, said resser bar bein provided with an upwar ly extending u a locating notch, and a lever adapted to act on said lug and having an ear to etiter said locating notch, thereby maintaining said presser bar in its proper position.

9. In a fountain pen, the oombination with a presser bar, of a lever formed of a single piece of fiat stock folded longitudinally, said lever having a portion adapted to be pivoted relative to sa1d easilng, a second portion defining the open position of said lever, a third portion adapted to contact with said presser bar and thereby operate the same, and a fourth portion adapted to engage said presser bar and hold said presser bar from shifting while said presser bar is operated by the third portion of said lever.

10. In a fouintain pen, the combination of a casing, a shell ada ted to be sprung in said casing, said shel having its rear portion extending into a spring and being provided with a pivot portion integral with said shell, a presser bar, a lug on said presser bar, a link connecting said presser bar and said-spring, a lever mounted on said pivot, said lever being so mounted in relation to said lug and spring that the lever will be held in its closed position by the action of said spring when said lever and said lug are in engagement.

In Witness whereof I have hereunto subscribed my name.

JOHN C. WAHL. 

